Earlier this month, Mozilla announced that its mobile operating system, officially named Firefox OS, would be put into some low end smartphones starting in early 2013 in Brazil: http://blog.mozilla.org/blog/2012/07/02/firefox-mobile-os/The OS is based on HTML5, the same language used to make websites and other applications.

If you’re a web developer, you can use these builds to create and test your webApp against. If you’re looking to help do some testing, these desktop builds will also give you an immediate opportunity to play with and help us write testplans and file bugs.